Hi, HMWP is compatible with WP Multisite on Apache server, but WP Multisite + Nginx server is not supported yet. If it’s WP Multisite on Apache server, then please follow these steps:
– goto HMWP >> ‘Start’ Tab >> select ‘Medium Privacy – More Compatibility’ scheme >> click ‘Save Settings’
– goto HMWP >> ‘Start’ Tab >> click ‘Multi-site Configuration’
– now use a FTP program or your host file manager and add those lines to your htaccess file (after RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ [-])
Note: You’ll first need to remove the HMWP rules from htaccess file if you have previously added there and then add new rules.